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  <title>获取全部 HTTP 请求头信息</title>
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  <div id="layout-content"><div id="function.apache-request-headers" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">apache_request_headers</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.3.0, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">apache_request_headers</span> &mdash; <span class="dc-title">获取全部 HTTP 请求头信息</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.apache-request-headers-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>apache_request_headers</strong></span>(): <span class="type">array</span></div>

  <p class="para rdfs-comment">
   获取当前请求的所有请求头信息。
   可在 Apache、FastCGI、CLI、FPM 模式下运行。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.apache-request-headers-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.apache-request-headers-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   包含当前请求所有头信息的数组，失败返回
   <strong><code>false</code></strong>。
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.apache-request-headers-changelog">
  <h3 class="title">更新日志</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>版本</th>
       <th>说明</th>
      </tr>

     </thead>

     <tbody class="tbody">
       <tr>
        <td>7.3.0</td>
        <td>
         此函数可用于 FPM SAPI 模式。
        </td>
       </tr>

     </tbody>
    
   </table>

  </p>
 </div>

 
 <div class="refsect1 examples" id="refsect1-function.apache-request-headers-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4691">
    <p><strong>示例 #1 <span class="function"><strong>apache_request_headers()</strong></span> 示例</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$headers&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">apache_request_headers</span><span style="color: #007700">();<br /><br />foreach&nbsp;(</span><span style="color: #0000BB">$headers&nbsp;</span><span style="color: #007700">as&nbsp;</span><span style="color: #0000BB">$header&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #0000BB">$value</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"</span><span style="color: #0000BB">$header</span><span style="color: #DD0000">:&nbsp;</span><span style="color: #0000BB">$value</span><span style="color: #DD0000">&nbsp;&lt;br&nbsp;/&gt;\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Accept: */*
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0
Host: www.example.com
Connection: Keep-Alive
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 notes" id="refsect1-function.apache-request-headers-notes">
  <h3 class="title">注释</h3>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <p class="para">
    你也可以试图从环境变量中读取普通<abbr title="Common Gateway Interface">CGI</abbr>变量，PHP以<span class="productname">Apache</span>模块方式运行时有可能无法获得。使用<span class="function"><a href="function.phpinfo.html" class="function">phpinfo()</a></span>获得可读取的变量列表。
    <a href="language.variables.predefined.html" class="link">环境变量</a>.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.apache-request-headers-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.apache-response-headers.html" class="function" rel="rdfs-seeAlso">apache_response_headers()</a> - 获得全部 HTTP 响应头信息</span></li>
   </ul>
  </p>
 </div>

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